On Fri, 25 Nov 2005 18:45:33 GMT, Jumpster Jiver
wrote:

Seafarer wrote:
Hi
Got two remote golf trolleys,one not working that I keep for
spares.Point is,both RF handsets are a different frequency.They won't
interchange.Other than taking the whole assembly off the spare is
there a way of adjusting the spare handset to my current ones
frequency?
Indeed how can I find out what the frquency is from my current
handset, as the way my golf is I'll probably lose it someday!
Manufacturer is in USA and out of business so can't go there.
Just finding the Frequency would be helpful.
Retired engineer with scope and freq.counter,function gen,logic probes
the lot if needed to get it.
Never had anything to do with this type of problem.Cheers



Name the manufacturer. Maybe someone here knows about it.
In general, maybe there are interchangeable crystals inside the
transmitter and the receiver. Open it up and look for a matching set.
Then simply changing the crystals to anything in the same frequency
range should be possible, as long as it's an FCC legal freq.
If the frequency is controlled by a microprocessor or eeprom, you will
need more specific information about how the manufacturer programmed
each unit to be on a different frequency, and get a hold of the
equipment they used to change it.
As an alternative, if you are into experimenting with hardware/software
integration, you can reverse engineer their system and reprogram it
yourself.
Thanks for the info,I didn't want to open up the handset just yet as
it's the only one.Perhaps later I'll swap it with the spare assembly
from the dud trolley and have a look inside.
In my days,not sure about now,you could attach a reciever plugged into
your scope and when a command was triggered up came the wave form on
the scope with the frequency easily workrd out.
I thought there maybe something along those lines where I could see
both waveforms and adjust from inside one.Thanks again.Frank